Stop motion for braiding machines



Sept. i1 1, 1923., 15467551 F. 'w. MANsrlEL-D i sToR MOTION-FORBRAID'INGMACHINES t FiledrMay 27, "1922 v2 shetsfsneet 1' 357 *I 'v l y :Il "`l'F191- f nii ll'llllllllllllllllllIIIII n Inven'for. Frank W. Mansfieldbym Anya;

` sept. 11, 1923.

F. w. MANSFIELD STOP MOTION FOR BRAIDING' MACHINES Filed May 27, 1,922

Fig. 2

2 Sh'eei'zs-Sheet I2 Invenlo. y Frank W. Mansfield NWS Patented Sept.11, 1923.

Unir-En srars FRANK-YW. MANSFIELD, OF

cANToN,--MAssACHUsETTs.

sToP MOTION Fon BRAIDNG MACHINES."

Application mea May 27,

To aZZfwwm itmajz/ concern.' i

Be it known that I, FRANK W. .MANS-` FmLD, a citizen' of the UnitedStates, and resident of Canton, county of Norfolk7 State ofMassachusetts, have invented an Improvement in Stop Motions for`Braiding Machines, of which the following description, inconnectionwith the accompanying drawing, is a-'specificatiom likecharacters on the drawing representing like parts.

This-invention relates to braiding ma? chines and particularly tostopVmotions for braiding machines and has for its object to provide anovelstop motionwhich is 'con-` structed to automatically stop the machinewhenever an imperfection is formed inl the braided product deliveredfrom i the 'machine which c'auses an increase in the size of theproduct.v

Thel invention is useful in connection with any braiding machines whereit 'is de sired to produce a' braided product which is free from knots,'bunches or enlargements. but it is especially useful in connection'withbraiding machines that are adapted to braid iish lines or other similarcord because it provides for stopping the vbraiding machine at once lincase a knot or" other bunch is braided into the product in such a way asto cause a bunch or enlargement therein.

The invention consists of a gauging 'eye which is situated justabove thebraiding point and through which the product passes7 said eye having adiameter of a size to permit the product to freely pass so long as it isof the requiredsize vbut which'will prevent the passage of a bunch or anenlargement in the product. This 'gauging eye is so connected with thestop mechanism that whenever a bunch or enlargement en gages the eye thestop motion will be Opf erated to stop the machine automatically.

In orderto give an understanding of the invention I have illustrated inthedrawings a selected 'embodiment thereof which will now be describedafterwhich the novel fea.- tures will be pointed out in theappendedclaims.l

Fig. 1 of the drawings is a side'view of a braiding machine embodying myinvention with most of fthe braiding carriers omitted.

i922. serial No. 564,058.

' Fig. 2 is a horizontal sectional view taken vv just above the plate 2.

Fig. 3 is a side Iview ofthe driving clutch. Fig. 4; is a View'of thegauging eye. 'The braiding'machine herein shown is of the well-knownvconstruction and 'comprises a base-1 supporting a plate 2 in which is'formed the raceways 3 in which the spin-- dies :il of thek braidingcarriers 5 operate, each; carrier'having a bobbinv 6 thereon.

These carriers are moved through the raceways/by means ofthe usualgears'7 that are situated below'the plate 2 and said gears 7 are drivenfrom a driving gear 8 whichis fast lon a verticalshaft 9. The: drivinggear 8 is in turn drivenrfrom a belt pulley ,'"f 10 that is loose onsaid shaft,- said belt' pullley being operated from a driving belt 13provided with a clutch member 1'1 adapted to "be clutched to aclutchvmember 12 rigid with the ldriving gear 8. 'The driving pul` ley.1 0 is slidable longitudinally of the shaft '9' andwhen it is in itselevatedposition shown in full lines Fig. 3 it will bek clutched. to thegear 8 and shaft 9 thereby operating the machinebuty when it is loweredinto the 'dottedA line position vit -is disengaged' from gear andy the"machinewill` the driving come to rest.

The pulley 10 is raised into its elevated position by meansof a lever`14pivoted to the frame at 15 and situated Vbeneath the .pulley,said'leverthus'constituting a sup- .port for the; driving pulley.' This lever hasal latch'16 pivoted thereto which' is adapted vknock-offv memberbeingynormall'y held in the position .'shownin Fig. 2 by means ofqa toengage van' 'arm 17l on a swinging knock-f4 ofi' member 18 that Vissituated above Vthe spring20. Thisknock-off member is -adapted tobeengaged bythe tensionweight 21 on any bobbin carrier `when it fallsdue to breakage'of-the corresponding thread, the engagement of 'the'fallen vtension `weight with the knock-oifrmember 18 'sw-inging the'latter into athe dotted line position Fig. 2

therebyreleasing-:the'finger 17 from r.the latch 16 and allowing thelever 14' and pulley llO-,to dropintothe dotted line position Fig; 3thus disconnecting'the driving element from the gear 8 and stopping themachine.

The parts thus far described are or may be all as usual in braidingmachines and form no part of the present invention, and in the operationof the machinev the braie'e ing carriers are carried around in the races3 thereby to braid together the threads 22 from the various bobbins toform the cord or other nished product 23. This cord may be either around cord or.a flat cord depending on the character of the raceways 3.

The present invention: relates toa novel device for stopping the machineautomatically in case the cord orother braided product 23 is formedwith: a bunch or--k'not or other enlarged spot. .This is accomplished.by providing a gauging eye 24 which is situated just above the braidingpoint 25 and which is of a size to allow the braided product 23 to passfreely therethrough provided said product does not exceed itsproper or`predetermined diameter.` vIf: thev braided product is a round cord orai line such asa sh line, then the hole throughl the`r part 24: will beround and w-ill have adiameter jusiL sufficient to permit the cordv 23lto pass freely therethrough. This rgauging eyev isv shown as carried bythe 'end' of .a lever 26 pivoted to the frame as shown at27. This arm 26is normally acted upon'V by a spring which holds it inthe horizontalposition shown but if for any reason, a knot *or bunch is formed in thebraidedl product 23,- as indicated by dotted lines 28, the engagement of.this knot or bunch with the gauging eye 24k will swing the lever 26upwardly intothe `dotted line position. 1

Means are provided whereby such swinging movement of the lever 26 willoperate to release the latch 16 from the knock-off member 18 thusallowing the driving pulley 10 to be automatically disconnected from thedriving gear 8. i j

Thev formation of the bunch or knot 28 may result from various causes,such for instance as a knot in one of the'threads -22zor because somelintzor threadend or' some other foreign object gets caught Vfon;one ofthe threads 22 lor becomes braided into. the

cord.

The means herein shown'for releasing the latch 16 by theswingingmovement ofthe lever 26 comprises a rod 29which is pivotallyconnected at its upper end to the end of the lever 26,as shown at 30 andat its lower end is connected to ya dog3'1 that is i f slidablevertically on a'pin 32 carried bly the knock-off member' 18. lThisdog'31 has an larm 33 provided with afshoulder 311.

56 is a spring secured at one end to the Aframe' and at the other'end'tothe rod 29,

said spring normally holding the parts. in the position shown Ain AFig?1'.jfThe shaft 9 has a pin or proj ection'35extending radially j.thereby V,bringing the shoulder 34 into the path of movement of the pin35. The shaft 9 is rotating in the direction of the arrow Fig. 2 andwhen the dog has been thus lowered the pin 39 engages the shoulder 34.and operates through the dog to swing the knock-ofl` member 18 into itsdotted line position thus releasing the latch 16 and bringing themachine to rest.

` After the knot 28 has been removed and i before the machine is'startedagain the lever 26 and dog 31 will be returned to the yfull lineposition shown in Fig. 1.

It is; desirable that the gauging eye24 should be situatedvclose toyther braiding point 25 and as this point varies in ak vertical directiondepending on theV character of the yarn being braided, I have providedmeans for adjusting the lever 26 vertically. `'Ihis is accomplished bypivoting said lever on a supporting member .36 which in turnA is`vertically adjustable onV a bracket armv 37 secured to or forming partof the frame,

the member 36 being retained iny vertical adjustable position by aclamping bolt 38.

The connection 30 between the rod and member 36is also preferably anadjustable one so as to permit of this desirable vertical adjustment.Vhile I have illustrated herein aselected embodiment vof my invention Ido not wish to be limited to the constructional yfeatures shown. i

I claim: j j j 1. In a braiding machine, the combination with braidingmechanism for forming a braided product having a predeterminedtransverse dimension, of a drivingshaft for ioo iio

operating the machine, said shafthaving a` projection, a driving pulleyslidably mounted on the shaft and adapated by its sliding movement to beclutched to or unclutched from the shaft, a latch for holding the pulleyin clutched relation to the shaft, a knockoff lever to retain the latchin its operative position, al dog carried by the knock-offlever andnormally situated out of thefpath of movement of said projection,andwmjeans-to move'the'dog into such path of movement when a defect isformed in the product, whereby the projection on the shaft engages thedog and thus shifts the knock-oft' lever to release the latch.

2. In a braiding machine, the combination withbrading mechanism, ofv adriving shaft Iso therefor having a projection 35, a knock-015i' lever18 controlling the operation of the shaft, a dog 33 carried by theknock-oli' lever and normally situated out of the path or"` 5 movementof the projection, a gauging eye through which the braided productpasses from the braiding point, and connections between said eye and dogby which the latter is shifted into the path of movement of theprojection when said eye is moved by a knot, 10 bunch or other enlargedportion of lthe braided product.

In testimony whereof, I have signed my name to this specication.

FRANK W. MANSFIELD.

